Your question was voted down. From ["What is reputation? How do I earn (and lose) it?"](https://askubuntu.com/help/whats-reputation):

> **You lose reputation when:**
>
> * your question is voted down: −2

---

Voting is when someone clicks the up or down arrow to the left of a question or answer. Those arrows look like this on the main site:

![Voting arrows](https://i.sstatic.net/hnLGH.png)

When your question is voted down, that means someone clicked on the down arrow.